I've been looking forward to this weekend for some time. It's the London Freewheel on Sunday. The north of the river From St. James' Park to London Bridge (and over the bridge) is given to the bicycle.
Unfortunately, the better half isn't confident enough on the bike to join me, so I'll be going alone - except for the expected 30 000 other people who will be joining me.

My only real worry is getting into town with my bike, with South West trains only allowing two bikes per train....